Answer:
With regard to individuals, the IRS has a stated preference that you obtain the individual's SSN for accounts in his/her name, including any sole proprietorship accounts.
But if you have a levy, and are unsure as to whether it targets a customer with a name that's the same as the one on the levy, compare any address information first. If that's not definitive, contact the IRS or state office that issued the levy for clarification.
First published on BankersOnline.com 7/18/11